2EKT:
reference: Structure and ligand binding properties of myoglobins reconstituted with monodepropionated heme: functional role of each heme propionate side chain., Harada K, Makino M, Sugimoto H, Hirota S, Matsuo T, Shiro Y, Hisaeda Y, Hayashi T, Biochemistry. 2007 Aug 21;46(33):9406-16. Epub 2007 Jul 18. PMID: 17636874

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